// For flags

CVE-2024-39349

Synology BC500 synocam_param.cgi Stack-based Buffer Overflow Remote Code Execution Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability regarding buffer copy without checking size of input ('Classic Buffer Overflow') is found in the libjansson component and it does not affect the upstream library. This allows remote attackers to execute arbitrary code via unspecified vectors. The following models with Synology Camera Firmware versions before 1.0.7-0298 may be affected: BC500 and TC500.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology BC500 cameras. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the synocam_param.cgi module. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

*Credits: Freddy Ma, Jimmy Chang, Jimmy Liu (DrmnSamoLiu), Kyo Chen, Nancy Chang, Sébastien Dusuel (DuSu) working with Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-06-21 CVE Published
  • 2024-06-24 CVE Reserved
  • 2024-07-26 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Synology
Search vendor "Synology"
 Camera Firmware
Search vendor "Synology" for product "Camera Firmware"
 >= 1.0.0 < 1.0.7-0298
Search vendor "Synology" for product "Camera Firmware" and version " >= 1.0.0 < 1.0.7-0298"
en
Affected